Warren Buffett wasn’t the only high-profile billionaire buying up UNH stock

UNH is soaring in premarket trading, after the much-discussed “secret stock” of conglomerate Berkshire Hathaway turned out to be none other than the beleaguered health company.

But it wasn’t just Warren Buffett who was buying. 13F filings, first reported by Bloomberg, reveal that David Tepper’s hedge fund, Appaloosa Management, added another 2.28 million shares to its stake — taking its total to 2.45 million shares.

At the latest price in the premarket (about $300), that would be worth about $735 million, slightly down on the value listed in the filing (some $764 million) at the end of June.

At roughly 12% of its public portfolio, that makes UnitedHealth Appaloosa’s second-biggest position — second only to an $801 million position in Alibaba.

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SpaceX gets a wave of bullish ratings from Wall Street analysts

SpaceX received more than a dozen positive analyst calls on Tuesday — including from major Wall Street banks — as they initiate coverage on Elon Musk’s space and AI company.

SpaceX went public on June 12 at a $2.2 trillion valuation, the largest debut in history. While the company hasn’t yet posted a profit, it seems to have convinced Wall Street that it will get there and grow its valuation on the way.

Of the at least 17 analysts that gave a rating on Tuesday, all but one gave it a “buy” or “outperform” rating. MoffettNathanson was "neutral."

The ratings come as SpaceX joined the Nasdaq 100 index, a benchmark tech-heavy basket of companies that underpins millions of portfolios. The inclusion adds built-in demand for the stock from index funds and ETFs.

Still, SpaceX fell more than 5% on Tuesday amid a broader sell-off, and is currently effectively flat from its opening price of $150 a share.

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